In the old days they sent the T patients to pine woods, so essential oils came to my mind; In France it has been used in hospitals to prevent germs spread all over. They also gave them capsules of essential oils, some of them need a carrier oil; like oregano oil.
"Clove (Syzgium aromaticum) is highly antimicrobial and antiseptic. Courmont demonstrated that a solution of .05% eugenol from clove oil was sufficient to kill the tuberculosis bacillus.
Lemon Oil (citrus limon) has been studied by Jean Valnet, M.D., who found that the vaporized essence of lemon can kill meningoccus bacteria in 15 minutes, typhoid bacilli in one hour, Staphylococcus aureus in two hours, and Pneumoccus bacteria within three hours. Even a .2% solution of lemon oil can kill diphtheria bacteria in 20 minutes and inactivate tuberculosis bacteria.
Thyme oil (Thymus vulgaris) is effective against Escherichia coli, the typhus bacillus, and streptococcus, diphtheric, staphylococcus and tuberculosis germs." http://www.apteraromatherapy.com/articles7.html