I think it's the "aerosoling it into your lungs" part that is bad. Drinking is okay <img src="i/expressions/face-icon-small-wink.gif" border="0"> . Someone please correct me if I've got it wrong!
When I learned that they quit using vinegar to sterilize nebs, I have used rubbing alcohol to sterilize my Flutter- don't know if that is a recommended way to clean it or not, though, so you may want to ask first <img src="i/expressions/face-icon-small-wink.gif" border="0"> . I don't use mine very often.