Broad Spectrum Antivirals
While there is confidence that a broad spectrum vapor can be produced for the respiratory system and you can read about it here, non-respiratory system virii and bacteria is more challenging. Vaccines are not effective in aging persons suffering immuno-senescence.
- Skin contact - HPV (warts)
 - Respiratory - Cold virusues, influenza, measles, mumps, rubella
 - Faecal-oral - Polio, echo, Coxsackie, Hepatitis A, Rotavirus
 - Milk - HIV, HTLV-1, CMV
 - Transplacental - Rubella, CMV, HIV
 - Sexually - Herpes 1 and 2, HIV, HPV, Hepatitis B
 - Insect vector - Yellow fever, Dengue fever
 - Animla bite - Rabies
 
CMV - cytomegalovirus, HPV - Human Papilloma Virus, HTLV - Human T-Lymphotropic Virus
Here is a more comprehensive list, https://viralzone.expasy.org/678
 IMMORTALITY