Recognizing poisons by scent is actually a fundamental skill for Taiyi Medical Practitioners.
After all, many toxic substances can be avoided in advance by their scent.
If it's simply a medicinal item, then using the sense of smell, one can indeed determine what herbs were used.
But the poison concocted by Su Ningxiang used at least fifteen different herbs.
When many herbs are mixed together, the scent changes too, whether it's the order in which the herbs are added to the medicine furnace, or the varying ages of the herbs.
How on earth did Ye Wanlan determine that the last herb Su Ningxiang added in the concoction process was the 180-year-old Deserted Mountain Wood?!
The attendant broke out in a cold sweat, his back soaked with perspiration.
He had just heard that Ye Wanlan has recently returned to the Lin Family as a distant relative.
How could someone studying the Heavenly Music Method possibly possess such profound knowledge of pharmacology?!