Many thanks everyone! We have rain forecast for this afternoon, so that should help clear the air.
The hard swellings on his head have started to go down and I'm wondering now if they were maybe caused by insect bites, skin round his nose looks red and itchy still, so I don't really know - could be a bit of both. The wretched ticks are already on the battle field - pulled out 3 this week,
, although they weren't in the places that were swollen!
Off to the vet in the morning, will see what he thinks. Will get some Piriton (equivalent) anyway though I think, sounds like a good idea to have in incase of emergencies - thanks for your advice all!!