You know those face masks people wear in surgery? Why not have one on standby, pre-soaked in olbas oil. It'll stop the unwelcome odour of "frequent flyers" as well as assist when you're feeling bunged up in the winter! I used to have a 'face mask' for cycling in London - in winter I'd put some Olbas Oil drops on it - worked a treat! Received your book this weekend by the way.....really looking forward to getting stuck into it. Take care.