The “wheezy feeling” is suspicious for that diagnosis but also consistent with bronchitis which, if the case, will likely subside with sustained
smoking cessation. Should you at any time in the future experience unexpected shortness of breath, it would be reasonable for you to be checked for asthma and if demonstrated, seeking treatment for it.
The anxiety you describe seems to be having a negative effect on your quality of life. I suggest that seek treatment for that.