All of Norwegians have it and all at the maximum effect so they can get doped more and hide more stuff... oh well
This is not correct. For instance, Klaebo and Krueger who won 5 golds and 1 silver between them (one being the same gold in the relay) have not asthma.
Educate yourself.
Asthma isn't doping. You can compare asthma to allergies. It's a disadvantage you take medicine for to get back to equal terms in terms of airways capacity. A healthy athlete can't gain anything from using asthma spray, as their airways already are good.
The only way of using any kind of asthma related medicine in a doping related way is getting it into the body in large quantities in food form. If used in such fashion it can help build muscles. There has been international studies on all of this.
Norway for sure aren't giving athletes large quantities of food made of asthma content (if it even exist?). Heck, Klaebo even struggled to eat enough slices of normal bread for breakfast this Olympics.