Home > Newsletters > Need to Know > Set up an air filter at home Updated 12 May 2016 Action point 0 When suffering from allergies caused by pollen it is better to go outside after a good rain because rain clears pollen from the air. It’s best to stay indoors on dry, windy days. Read more about preventing allergies. More: Need to KnowSet up an air filter at home advertisement Other news Medical SEE: Why do I get asthma when I exercise? Medical Scientists discover a possible cause for restless legs syndrome Lifestyle How being the office germaphobe is making you sick Fitness 4 reasons your muscles are cramping up Parenting Things you shouldn't say to someone who stutters Sex This is exactly how long the sex ‘afterglow’ lasts, according to science From our sponsors R2000 Skin Renewal online store voucher up for grabs! Dementia and Incontinence: what you need to know 8 strategies for treating both your bladder problems and your depression Live healthier Don't even bother » SEE: When you cough, this is what happens to your body LISTEN: Can you spot the smoker’s cough? 7 cough remedies that definitely don’t work A chronic cough can be the bane of your life. Here are seven cough remedies you shouldn't waste your time with. Be in the know! » How to manage sensitive teeth 5 ways runners mess up their teeth Oral health basics: what you need to know Dr Simon Reeves talks us through the importance of oral health basics. Here’s how to care for your teeth properly.