During the Covid pandemic, people with lung problems have been at the most risk of getting infected. The virus attacks the lungs first and then spreads to the other parts of the body. This leads to a sudden unbalance of oxygen levels in the body. Health experts have advised to stay away from smoking and build a stronger immune system to stay protected from the coronavirus. Smoking impairs lung function, thereby reducing immunity and making it harder for the body to fight off various diseases. While at home, keep measuring your oxygen and blood sugar level and seek a doctor's advice if you witness the symptoms.