I like talking to humsafars only if they are not weirdos!
Once on a flight from Toronto to London I was so exhausted that I fell asleep. And when I woke up I found my head resting on my humsafars shoulder/arm…how super embarrassed I was :)! I had slept for good 3 hours…super duper embarrassed 
Later I apologized and had to be extra sweet to him :). Glad fully he was a nice guy from Dhaka and not at all weird.