Most of the formaldehyde that enters the human body through breathing will be excreted with normal breathing, and only a small amount will be ingested into the body, which will directly cause adverse harm and almost no residue. Do not consider discharging this part of formaldehyde. Human metabolism will also produce some formaldehyde, which can also be discharged with metabolites.

You can eat some anti-formaldehyde food. Among the vegetables we often eat, many people have detoxification function, such as tomatoes, which are sweet and sour, slightly cold, and have obvious effects of clearing away heat and toxic materials, diuresis and detumescence, resolving phlegm and quenching thirst; Luffa is sweet in taste and cold in nature, and has the functions of clearing away heat and cooling blood, detoxifying and activating blood; Cucumber and bamboo shoots can clear away heat and induce diuresis; Celery can clear away heat and promote diuresis, cool serum and liver fire, and has the effect of lowering blood pressure.

Extended data

Ventilation method

Through the circulation of indoor air, the content of harmful substances in indoor air can be reduced, thus reducing the harm of such substances to human body. People often close doors and windows in winter, so the indoor and outdoor air can't circulate. Not only the content of formaldehyde in indoor air will increase, but also radon gas will accumulate continuously, even reaching a very high concentration.

Advantages: good effect and no cost.

Disadvantages: It takes a long time, and formaldehyde removal generally takes more than three years.

References:

Baidu encyclopedia-formaldehyde