There is no direct link between how long formaldehyde smells and leukemia, only that long-term exposure to formaldehyde can increase the chances of developing leukemia.
Formaldehyde, whose chemical name is formalin, is a toxic volatile gas that has a significant damaging effect on the human body. Too much time in a room with a high concentration of formaldehyde can cause dry eyes, cough, dry throat, sore throat and a series of discomfort. This concentration of formaldehyde induces genetic mutations in blood cells, especially in pediatric patients, because children’s DNA is immature and less stable, accepting the stimulation of toxic gases, genetic mutations may occur, causing leukemia to occur, but it is not certain how long it will trigger leukemia.
To avoid surviving in an environment with high formaldehyde concentration, pay attention to improving indoor air quality, ventilation can reduce indoor formaldehyde concentration, put green plants can also help formaldehyde absorption, do not live in a closed high concentration of formaldehyde indoor for a long time.