Yes. Air that has too much moisture creates a breeding ground for allergens like mildew, mold, dust mites and bacteria. These irritants make their way into your home through the ventilation system, windows, and doors. With the right conditions, like plenty of moisture in the air, they can multiply into whole colonies of allergens within hours. Dry indoor air can irritate your throat and sinuses, causing symptoms that may seem like allergies, but it’s actually what doctors refer to as non-allergic rhinitis. Because the sneezing and congestion isn’t caused by allergies, typical allergy treatments won’t help. Typically things like nasal irrigation and decongestants work better in these cases than just taking antihistamines.