Wa alaikum salam,

This is from Satan as leaving smoking has nothing to do with that.
Make ruqya on yourself and drink from that water a lot and you will feel better in sha Allah.

I am 24 years old. I was a chain smoker and  from the last 4 years i left smoking . and from the day I left smoking my stomach is disturbed. I did not remain in wudhumore than 2 or 4 minutes my stomach start making gases in every ten minutes .and in Ramadhan it is difficult for me to do wudhu again and again. In Salah I also find difficult…please elaborate me briefly ?