You can not smell Natural Gas, it is invisible, and odorless because it is burned.
Several things, including gravity, light, radio waves, xrays.
because you smell it, and people don't see "smell"
No refers to smell and molecules are smell but we can't see them.
is is the smell of a dog
People cannot see smell by default, however, there is a condition known as "Synethesia" in which people's senses blend together. If someone had this condition, it would be possible for them to see smell. It's a rare disease, though, so in answer to your question, no, people can not see smell.
You can see ships, hear the ships docking. and smell fish, water, and mud.
You can't see or smell thoughts or emotions, as they are abstract concepts that are felt and experienced internally.
You can see ships, hear the ships docking. and smell fish, water, and mud.
You can see microorganisms through a microscope, but you cannot smell or taste them.
both.
You can see ships, hear the ships docking. and smell fish, water, and mud.
You can see ships, hear the ships docking. and smell fish, water, and mud.
You can see ships, hear the ships docking. and smell fish, water, and mud.