I have the same thing. I consider my asthma very mild now, it hasn't really bothered me at home since I was 16 or so. Except when I travel to India (which I did a lot for work until COVID hit) - every time I need to use an inhaler every day.

The polluted air in Delhi, parts of Mumbai (e.g. Navi Mumbai), Pune and others is just horrible. Especially at night when the temperature drops a bit, it's like it hangs in the air like a toxic cloud from a Marvel comic - the air almost seems semi-solid.

Bangalore air has very high pollens, so that triggers allergy for many people.