Primarily the nicotene, but I believe that the manufacturers of cigarettes add in several more "secret" chemicals, poisons, and properties that increase the addictiveness of the cigarette.
Carbon monoxide(CO) is a poisonous, colorless and odorless gas that is produced as a result of incomplete burning of carbon-containing fuels. Answer: Appended are lists of the constituents of tobacco smoke and the additives put into the typical cigarette. Of these additives several hundred are colorless and odrorless.
Stimulating
Yes, pure LSD is odorless and colorless.
Milk is colorless, the white color is due to scatting of light... and is not odorless.
Water is usually a colorless liquid.
Yes, argon is a colorless and odorless gas. It is a noble gas that is typically found in the Earth's atmosphere in trace amounts.
the terms odorless ad colorless are quantitative terms
Its odorless and colorless.........
helium
Argon is colorless and odorless
Yes hydrogen is a colorless odorless gas, it is the the first chemical element on the periodic table and the most reactive.
Milk is actually colorless. Its white appearance comes from the scattering of light by colloidal particles. Milk is not odorless - that is, it has a smell to it.