From DocShop:

Ever wonder why you feel under the weather so often? Maybe you haven’t even done anything outdoors in a while, yet you still feel sick and allergy-ridden? It may surprise you to know that it could be factors inside your house, not out, that are causing you to sniffle and cough all day long. Luckily, you can eliminate most of this risk by making a few changes in your daily habits.

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