That sure is true!
I'm having Asthma my whole life, a normal asthma but also a completely animal allergy..
Well when I grew up, it was very clear I would be around animals my whole life (animals are the most important thing in life) and I do have medications for that allergy but I never had as much oxygen as a normal person around animals.
Now I'm 24 years old, live with three dogs, a cat, two birds and a rat inside my home…
I have to say I always am a bit out of breath (believe me, you get used to that) but it's much better than many years ago..
That's why I always have trouble with people that put away their animals so easy when someone has an allergy...
And also here in Holland, mothers (and fathers) are way to far with cleaning their kids..
When I was young, I played in the mud and ate a sandwich at the same time... Never was ill...