Other users also have reported success with Neosporin. It is not known if it has any side effects. Toenail fungus can affect one nail on a foot or spread to multiple nails. This extract can be applied directly to the infected area. Fungus infection, one of the most common foot problems, affects more men than females. Sometimes, a fungal infection can cause foot odor. Ayurvedic Indian medicine uses snakeroot extract from sunflowers as a remedy for toenail-fungus. That makes Glucotrust a solid offer offer to continue testing with your audience. Small fissures in nails can allow germs from fungal colonies to enter the nail and cause infection. These are some useful tips to help you clear up or prevent a fungal disease. Toenail fungal infections can occur more frequently in men than in women.