Is there anything that passangers can do to avoid sitting next to dogs onboard?

Considering all the fake service dogs onboard nowadays…

Is there any recourse that passengers have to avoid having to sit next to a dog for multiple hours?

Some potential scenarios come into my mind, that I am not sure airlines have figured out:

• Danger to babies/kids -> A fake service dog is not trained, it could be potentially a deadly danger to a kid or even adults.
• Allergies -> Someone could be allergic to dogs.
• Hygiene / Diseases-> How airlines can make sure that animals don’t transport serious transmissible diseases or parasites harmful to humans.
• Trauma / PTSD -> Someone could have a diagnosed ptsd versus animals.

How is this not considered when allowing animals to board a plane with humans?

Note: This is a serious question discussion. I like dogs, I just don’t want dogs in my personal space for hours. Please do not compare dogs with any human situation. There are inconveniences with humans in enclosed spaces too, but we are humans so we should know better if things don’t work out well.