This is an interesting article on travelers who are allergic to pets and their rights to comfort when traveling in the cabin of an airplane. Click here to see the article . The author makes a good point about passenger rights when it comes to animals not traveling in a carrier such as service animals or emotional support animals.
The article did not mention the concessions that Air Canada has made for folks that are allergic to pets. This airline address the issue at the time of reservations, not when the aircraft is ready for take off. Air Canada will ban dogs or cats on planes without HEPA filters when a passenger with an allergy to dogs or cats is on board. If the dog is a service animal, priority will be given to the first reservation made. On planes with HEPA filters, a five row buffer zone between a pet and the passenger with allergies will be established in the aircraft.
With the increase of animals traveling in the cabin, those who cannot be exposed to pet allergens should work with the airlines at the time of reservation to ensure they are not seated in close proximity to animals. This is an issue that may surface over time as the airlines try to accommodate those passengers on both sides of the fence.