Guano, Histoplasmosis, and Our Service. Large accumulations of guano sometimes breeds a fungus called Histoplasmosis (see article, Is Bat Guano Dangerous?). This fungus can infect an eye or a lung, and in a serious case, you can lose your eye or lung to this infection.
Cromolyn sodium and nedocromil are prescribed as aerosols in metered dose inhalers (MDIs). Generally, you'll need to take either drug four times a day, but nedocromil has also been effective in a twice-per-day dose.
For it to work best, you need to start using it one to two weeks before allergy season starts and then use it one or more times every day. It doesnât work as well as steroid nasal sprays. You can buy NasalCrom as a nasal spray at the drugstore. Cromolyn is safe for most people. Ask your doctor before using it if you have wheezing from asthma or sinus pain. Side effects can include sneezing and nasal burning. Ipratropium Nasal (Atrovent Nasal)