Why Are There Rules and Rituals Associated with Handling an 'Anomaly

Why are there rules and rituals associated with handling an 'anomaly' such as a mandrake root?

A) to ensure that their power does not go out of control
B) Actually anyone, trained or not, can handle these as long as gardening gloves are worn.
C) anomalies are evil and they must be purified
D) to ring-fence their strong and dangerous odor
E) to diffuse (weaken) their power