The answer to your question is false.
Abiotic factors are factors that are not caused by the activities of living organism
examples rain, wind, temperature and sunlight
The olfactory system is involved in the sense of smell. The receptors of smell are not routed through the thalamus. The signals id directly routed from the olfactory bulb to the olfactory cortex and thalamus is not contacted in between. This is the difference between the taste and smell receptors, although both of their receptors are stimulated from mucus/saliva in the mouth.
