In metal bonds, electrons sometimes flow freely among the other atoms. Covalent bonds are weaker than ionic bonds, so covalent compounds are more likely to have an odor than ionic compounds.

Ionically bonded compounds are unlikely to smell, covalently bonded things may or may not smell.

Ionic compounds Volatility:- Very low for the reasons outlined above. This means that they tend to be odourless. Electrical conductivity:- In the solid state they are insulators as they have no charged particles which are free to move, they are all locked into position in the lattice.

Odors are also known as aromas or fragrances and (if they are unpleasant) as reeks, stenches, and stinks. The type of molecule that produces an odor is called an aroma compound or an odorant….Aroma Compounds by Organic Structure.

One of the most foul-smelling substances is hydrogen sulfide (H2S), which has a characteristic rotten-egg odor.

The molecular formula describes the chemical makeup. The chemical names are related because scientist have named the smells with certain endings telling you what the molecules are based off the smell.

Gases, liquids, and even some solids. We can smell them all as long as some of the object’s molecules can enter a gaseous state. We smell gases because their molecules are free to enter our noses. We smell liquids because some of their molecules enter the gas phase after escaping from the liquid surface.

Why do you think molecules with different structural formulas have different smells? Possible Answer: Atoms on the molecules might react with smell receptors inside the nose. Different receptors may detect different types of molecular structures, leading to different sensations of smell.

The polarity or nonpolarity of a molecule is responsible for a great many of its observable properties. Small polar molecules smell. Small nonpolar molecules do not smell.

Hence, the receptor sites of the human nose get the sensation of polar molecules only, and hence we cannot smell non-polar molecules. Hence, non-polar molecules are odorless. Polar molecules dissolve in water and has a smell and is not symmetrical.

Small Polar Molecules If the overall shape of a molecule is asymmetrical and the molecule is made from more than one kind of atom, chances are it is a polar molecule and will have a smell.

7 What does polarity have to do with smell? Polar molecules dissolve easily in other polar molecules, such as water. Nonpolar molecules do not dissolve easily in polar molecules. In order to smell, the molecule needs to dissolve in the water found in the mucus lining of the nose and be attracted to the receptor site.

Answer B=Polar Bond.

Water is odorless. This chemical element is a total nonnegotiable requirement for almost every organism on Earth, but it’s just a couple of hydrogen atoms stuck with covalent bonds onto an oxygen atom. There’s nothing smelly going on there.

Water doesn’t go bad. Having a freshness date on a bottle of water makes about as much sense as having an expiration date on sugar or salt. Although water, in and of itself, does not go bad, the plastic bottle it is contained in does “expire,” and will eventually start leaching chemicals into the water.

“Every once in a while your water has a bleach sort of smell to it, or if you’re used to hard water it’s like a metallic taste, but it’s not like that at all. It’s really very much like mold.”

When you (and most other mammals) dive underwater, you can’t smell anything because it is impossible to inhale without getting water in your lungs. A recent discovery by Dr. Kenneth C. Catania at Vanderbilt University shows that two mammals are capable of sniffing underwater.

Scents that humans are particularly attuned to include chemical components in bananas, flowers, blood and sometimes pee. In 2013, Laska and colleagues tested the abilities of humans, mice and spider monkeys to detect urine odors found in common mouse predators.

How far can a human smell? With such a high volume of scent receptors, they can smell far… up to 60 square meters or 2.3 square miles. But the actual number may be much higher, because there are more than 128 odor molecules, Vosshall said.

According to new research, African elephants have the strongest sense of smell among animals. Recent studies have found that the African elephant has the strongest sense of smell in the animal kingdom.

Therefore, we can actually say that a dog’s mouth is as clean as his owner wants it to be. With all the dentistry toys for dogs that they can chew on and thus clean their teeth, it looks like our canine friends might have, after all, the leading position in the animals with the cleanest mouths top.

A newly opened can of surströmming has one of the most putrid food smells in the world, even stronger than similarly fermented fish dishes such as the Korean hongeohoe or Japanese kusaya.

Here’s our process. Body odor is the perceived unpleasant smell our bodies can give off when bacteria that live on the skin break down sweat into acids. Some say it is the smell of bacteria growing on the body, but it is actually the result of bacteria breaking down protein into certain acids.

Phantosmia is the medical word used by doctors when a person smells something that is not actually there. Phantosmia is also called a phantom smell or an olfactory hallucination. The smells vary from person to person but are usually unpleasant, such as burnt toast, metallic, or chemical smells.

Technically, it’ll be labelled as olfactory hallucinations or phantosmia. The olfactory (pertaining to smell) receptors transmit signals to the brain, where the smell is perceived.

Common causes include chlamydia infections as well as injuries to the urethra, such as from catheter trauma. The extra presence of bacteria can cause an unpleasant smell. Doctors will usually treat the condition with antibiotics, such as doxycycline.

Everyone has their own scent—just think of how differently your grandma and your boyfriend smell when you lean in for a hug. But can we smell ourselves? For the first time, scientists show that yes, we can, ScienceNOW reports. Our basis of self-smell originates in molecules similar to those animals use to chose mates.