CAD - Canadian Dollar. Our currency rankings show that the most popular Canada Dollar exchange rate is the USD to CAD rate. The currency code for Dollars is CAD, and the currency symbol is $.
1 Once they take hold, mold and mildew shed tiny spores -- and these spores trigger indoor allergy symptoms.  Pet Dander: If you have pet allergies, youâre not actually allergic to cat or dog hair. Instead, the allergic reaction is caused by a tiny protein in an animalâs saliva. Even homes without pets may contain dander. Thatâs because pet dander is sticky and light.
According to one study, dandruff has been shown to be possibly the result of three factors: 1  Skin oil commonly referred to as sebum or sebaceous secretions. 2  The metabolic by-products of skin micro-organisms (most specifically Malassezia yeasts) 3  Individual susceptibility and allergy sensitivity.