Hello dear, thanks for your question on HCM.
Smoking can worsen asthma.
Smoking also cause GERD (
gastroesophageal reflux disease ).
And GERD can cause
chest tightness and burning
chest pain.
It also cause worsening of asthma. So your symptoms are mostly due to smoking induced GERD.
So quit smoking as soon as possible.
Get done chest x ray to rule out
lung cancer.
Possibility of lung cancer is less in your case.
Better control of GERD is needed for symptomatic relief.
You need following lifestyle modifications.
1. Avoid hot and spicy food.
2. Avoid stress and tension.
3. Avoid large meals, instead take frequent small meals.
4. Start
Proton pump inhibitors.
5. Go for walk after meals.
6. Keep 2 - 3 pillows under head in bed to prevent reflux.
Don't worry, you will be alright.
But quit smoking as soon as possible.