Airline seats can indeed be infested - I got a nice case of scabies on an MX 727 some years ago. The way to deal with those (and bedbugs) effectively is not to follow the "cw" or folk remedies, it is to follow proper protocols - and for bedbugs in one's abode, that usually calls for professional help.

But there are plenty of sites with good information - Google to the rescue! - and for hotels, one helpful place is Bedbug Registry. And for plenty of information on the Cimicidae, there's Wikipedia...