No it's a noun
Airy
By a virus adjective
smelly
Yes. It refers to not allowing air in or out.
Air raids is a noun.
No, it is not. Broadcasters is a plural noun for either the companies or the on-air presenters. The possessive form (broadcasters') is used as an adjective.
Adjective
The adjective 'pneumatic' means of or pertaining to air, gases, or wind; filled or inflated with air or gas.
No, it is not an adjective. Pollutant is a noun. Polluted would be an adjective.
tiny
The adjective 'pneumatic' means of or pertaining to air, gases, or wind; filled or inflated with air or gas.
"Breathe" is neither an adjective nor an adverb; it is a verb that refers to the act of inhaling and exhaling air. The adjective form is "breathable," which describes something that allows air to pass through. An example of an adverb related to the verb would be "breathlessly," which describes how an action is performed.