Hi,sir My brother having fever , dry cough...

Hi,sir My brother having fever , dry cough ,weakness,last one week ,corona test done it's negative, he is consulting aster clinic docter. Dr.adv.tab .levocetrizine hydrochloride, and tab paracetamol content 2 days he takes medicine now he complaint not smell detection properly, no other complaint, he is tensed about corona,pneumonia sir any side effects this medicine