A very eco-friendly (heck, a generally-friendly) friend of mine was proudly showing off his fancy metal water bottle to me the other day. I (foolishly) tried to out-eco him and showed him the standard 2-litre plastic bottle that I’ve been using for half a year or so. He looks shocked and tells me this is carcinogenic and dangerous.
I don’t know enough to sort the wheat from the chaff. Help me, SDMB. Assuming I keep the bottle fairly clean, is it dangerous to re-use plastic bottles?