Atomizer
/ˈæt.əˌmaɪz.ə(ɹ)/
"Atomizer" in a Sentence (2 examples)
E-cigs look like cigarettes. They even have a cork-like filter. When the user inhales deeply, a battery activates an atomizer that quickly heats a chamber full of water, nicotine, and a chemical that has a faintly sweet taste.
Diluting the mixture, he screwed on the atomizer and sprayed it on his wrist.