Garlic is great for predisposition to stuffy nose and sinus infection. It has shown benefits for upper respiratory infections (cough, otitis media, pertussis, asthma, sinusitis). It has antibacterial, antifungal and antiviral effects. Garlic has also been shown to reduce blood glucose levels, increase serum insulin, and improve liver glycogen storage. If you are predisposed to a stuffy nose and sinus congestion, garlic is right for you!