Acetone is hygroscopic. To an extent. It stabilizes at about 10% water content, which isn't much. It evaporates quickly. We used to wash glassware with it. It's not overly toxic unless you drink it... we used to have beakers of the stuff sitting around open... Obviously, concentrating the fumes and inhaling might shorten your chemistry career.

Any organic solvent should be treated with care, even ethanol, which when consumed in quantity can lead to serious lapses in judgement.

"The price of good shotgunnery is constant practice" - Fred Kimble