Vick's is designed for use topically, OUTSIDE the HUMAN body; the ingredients do not belong IN the lungs & especially not for snakes. A few quick clips:
Vicks VapoRub is banned in America as it is declared not good for health it can create Asthma, TB etc. It is declared as Toxic by WHO. ... Vicks Vaporub is a common over the counter topical cream used to get relief from symptoms of common cold, cough and congestion.
"The ingredients in Vicks can be irritants, causing the body to produce more mucus to protect the airway," said Bruce K. ... Vicks has been reported to cause inflammation in the eyes, mental status changes, lung inflammation, liver damage, constriction of airways and allergic reactions.
https://www.mayoclinic.org/diseases-conditions/common-cold/expert-answers/nasal-decongestant/faq-20058569