“Should I take medications for bronchitis?”

The general rule is that if your cough is productive, it's not a good idea to suppress it. If the sputum is colored or odorous, you may need antibiotics. It should be cultured. If it's a non-productive cough, a cough suppressant will help. For viral infections, steam treatments can help.
IN ANY SITUATION, you should stop smoking to let the tissue heal up from the irritation.