Of course, if you're BFing, you could just drink plenty yourself and he would get the benefit! I like the bath suggestion. I'd probably be ok with giving my own bub the camomile, but peppermint, ginger and lemon all have very active compounds in them, so I'd err on the side of baths or like someone else suggested, using it in a vaporiser/essential oils in the room.

BTW - panadol will do nothing for snuffles - if you're using it to control pain or for a fever, then it will work for that. Other things to try are fess for little noses (saline drops that can 'unblock' them) or the Vicks baby balsalm - contains the safe aromatics - you could use a little on his feet. A vaporiser in the room over night will also help with snuffles and coughs.

Good luck!!