Depends on what bugs if it is clear then it is a midge. midges are generally found in a swarm and the best thing to do when you are amongst a swarm is to keep your mouth shut so they cant fly in accidentally
After much research, I have come to the conclusion that thrips are defined as an orange flying and biting insect. I was at a park today with my children, and I was wearing white and blue. Apparently...
That would probably be the horsefly. It is a very persistent and annoying insect. The female horseflies need blood to reproduce. They exist in most geographical locations though, not just Scotland.
In order of effectiveness:
Catnip
Lemongrass
Eucalyptus and friends (Tea Tree, Ravinsara, menthol, etc)
Peppermint and friends (other mints... technically includes catnip)
Pine and friends (any...