corporate-wage-slave

Was this AA rather than BA?

It's probably a good idea to keep anti-histamines, particularly the eye-drop types, handy if you are badly affected, dogs are a feature of everyday life including airports and air travel. Plus in transport to and from airports. There are several dozen dogs that work full time in Heathrow for example. In theory, once airborne, the HEPA filters should help, and some people with allergies in this space say they found face masks to be helpful (others people don' find them helpful). Moreover the spectrum that is connected with dog allergies tends to connect to other allergies, so it's important not to have medicines in checked luggage, which is in any case prone to get delayed .

I think it is reasonable to put the responsibility on you for this, to a greater or lesser extent, since you will know what is best for you and can take the appropriate precautions. The issue of "fairness" is best forgotten about, it's unhelpful in the moment. Same with food allergies - it's not realistic to filter the entire onboard catering via one person's needs. The nuclear option is to ask to be offloaded, if you had bags, due tot he delay this would cause, and so long as you were polite about this then BA would just rebook you on to alternative flights, which to DFW won't be at all tricky. But it would seriously disrupt the flight's operations - perhaps including cancellation - so you can see why that wasn't offered. I suspect the willingness to ask for volunteers would have been greater if that was on the table, there are bound to be staff travellers on board on that route in particular.