They're aromatic dispenser.

Deresute Aroma Manga

Dry throats are no good for Idols, after all.

Kaede-chan?

Kaede-chan?! What's that, Sake!?

You can't!

Won't it be good to use it as aromatic agent?

You drunk!?

Hand that bottle to me now!

Eeeh~ Don't be unreasonable, Kawashima-saan~

Indeed... It also does wonders to the skin, so thanks for that~

I've also thought of trying various scents as well.

If that's the case, I got plenty at home. How about...

Oh? You've put up some humidifiers?