Yes, AEROSOLS is a Scrabble word!

Letter values in Scrabble US: A 1, E 1, R 1, O 1, S 1, O 1, L 1, S 1.

Is it a valid word?

AEROSOLS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a cloud of solid or liquid particles in a gas
a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas)

Also: aerosol container, aerosol can, aerosol bomb, spray can.