I'm staying in a holiday cottage for New Year. Much needed break after a tough few months. All very nice except I seem to be allergic to the house! Everyone else is fine but I can't stop sneezing, wheezing, rubbing my eyes, etc. Its getting worse every day, what can I do? I think it's probably caused by dust but I can hardly wash all the curtains and change the mattresses! I'm getting desperate and starting to feel really ill - would antihistamines help? I've just had a huge sneezing fit and pissed myself - I can't put up with it for another week! Any advice?