Alcohol is known to cause neuropathy, the common symptoms of which are numbness
. And as is well known, smoking causes breathlessness. In addition, both alcohol and smoking increase the risk of heart disease
, which may manifest as left sided chest pain
radiating to left upper arm and a sensation of breathlessness. Taking coffeee will not make any difference in any of these. So please consult a doctor and get yourself evaluated, so that a proper diagnosis can be made and you can take appropriate treatment in the early stages itself.