At this point you can take advantage and use a sponge to clean the internal surfaces of the sink: the combination of vinegar and bicarbonate is very effective in removing dirt, disinfecting and making the metal shine.
After about 5 minutes, pour plenty of hot water into the sink to rinse and remove all residues, as well as bad odors.
To prevent the accumulation of food or other residues in the sink drain, we suggest you apply this trick periodically, without waiting for a bad smell to form or,