The word "irritant" means something that causes annoyance or discomfort. It can refer to a substance or a person that can bother or upset us. Full definition
In addition to flea saliva and certain foods / ingredients, your dog can also be allergic to an infinite variety of irritants in the environment. (healthypets.mercola.com)
Our babies skin is much to delicate to use a product that has so many skin irritants in it. (jenniferlabit.com)
Often times protocols like the Clean Program and Whole30 will eliminate other irritants like alcohol, caffeine, and sugar from the mix and advise that you avoid fried items, cheapo vegetable oils, gums and additives in packaged foods. (feedmephoebe.com)