I feel difficulty in breathing sometimes so i often take deep breathe from mouth but yesterday onwards when i do so i feel a sound in my ear which is like clouds are thundering it is sharp and for 1 or 2 seconds but it shocks me. is it ok?

It is not serious unless it happens repeatedly. If it continues at its present rate you should see an ENT doctor. I am assuming you are perfectly happy in every other respect

If you have asthma, please review your asthma plan, with your physician. Have a flu and COVID-19 vaccination. Other causes include infection, which is usually associated with fever. If you have reduced exercise ability, please also see Cardiology.