I have regular congestion in my nose, this causes pressure in my head, as well as affecting my sense of smell and taste. It is not something I have all the time, though it can be a weekly occurrence. If I blow my nose it seems that the pressure increases and brings a strange smell or sensation to my nose. I cannot explain this as it seems to be a pressure related smell, but not like when you normally react to a smell - hence me wondering if it is a sensation caused by the pressure. Some people have mentioned that it could be sinusitis, though they weren't medical people. It first occurred a few years ago - or so my memory tells me - and seemed to come regularly on Mondays. This led me to wonder if it was going out on a weekend that did it, drinks, smokey atmosphere, though I don't go clubbing anymore and it seems to have got worse lately, to the point where I can't remember a day in the last 2-3 weeks where I haven't suffered. etc. Any information would be greatly appreciated, I would like to know what causes this.