Why can't i smell anything by birth?

Not being able to smell anything from birth, a condition known as congenital anosmia, can be caused by genetic factors or developmental issues in the olfactory system. This condition can result from mutations in genes responsible for olfactory neuron development or the absence of olfactory structures in the brain. Additionally, environmental factors during pregnancy may also play a role in the development of this sensory system. If you have concerns about this condition, it's best to consult a medical professional for further evaluation.