The chemical can cause burning and red eyes, skin irritation and, if inhaled, coughing, sneezing and wheezing. However, in the true sense, this is not an allergic reaction. Allergic reactions involve the immune system. A baby's eyes and skin may be especially sensitive to chlorine, but frequent exposure is unlikely to produce an allergy. Tobacco smoke is an irritant for nearly everybody, more so in people with hay fever and other allergic diseases.
Avoidance is the most helpful measure.
I am looking for a dog for my son who has asthma and a slight allergic reaction to dogs. He's currently taking allergy shots. Although there is evidence of breed-specific dog allergens and of variable amounts of dog allergen among difference breeds and individual dogs, any dog will generate some allergen that is capable of causing allergic symptoms in a susceptible individual. The best recommendation for an allergic asthmatic is to avoid dogs as pets. A compromise for dog-allergic patients with asthma would be keeping all furry pets outside the house at all times.