Viruses are not alive. They can only be transferred through injection or "activated" within your own body in response to toxins
Like I said, the virus IS NOT ALIVE. It is not contagious outside of tissue. you could lick, inhale, or have sex with the flowers and you would not get the virus. The ONLY way you can get a virus is through injection.
Malaria is a parasite https://www.cdc.gov/malaria/about/disease.html