We leave for a trip to Florida in 2 days, and D woke up yesterday with a pretty nasty cough and then had a very slight temp this morning. The cough subsides within an hour or so of waking up, so I'm thinking it's probably post-nasal drip, which has me nervous about him having some sinus pressure. Sinus pressure would, of course, totally suck for our plane ride on Thursday! I have been told as an adult to take a shot or 2 of Affrin before the plane take off, but I'm guessing that's probably not safe for a 2.5yo. Any tips on relieving the sinus pressure for him to make the plane ride less painful?