Smelling socks does not usually lead to fungal infections in the lungs. Fungal infections may occur in the feet, leading to the presence of fungi on the socks, but these fungi are mainly mosses, which belong to the superficial fungi, and only invade the skin, hair and finger (toe) nails. And can cause lung fungal infection is mainly Candida, Aspergillus, Trichoderma and other deep fungi, can invade the human skin, mucous membranes, deep tissues and internal organs, and even cause systemic dissemination of infection. The two pathogens are different, so sniffing socks generally does not lead to lung fungal infections, if you suffer from lung fungal infections, you need to consult a doctor in a timely manner, under the guidance of the doctor to actively treat, avoid bad habits.