Using onions cannot remove formaldehyde, but the smell of onions is relatively strong and can mask some of the smell of formaldehyde. However, when formaldehyde exceeds the standard, it will have a more pungent smell. If there are fewer onions, it may not be able to cover the formaldehyde. pungent feeling.

But using onions to remove formaldehyde is unscientific, and this method is not advisable. Onions are not a product that removes formaldehyde, nor is this a folk remedy.

Onions can only mask the smell, but the actual formaldehyde is not removed, and it will still harm people's health. It is best not to believe in these smell-masking methods to remove formaldehyde, or to use professional and scientific methods. Removal is more reliable.

If you want to really remove formaldehyde, you should use some scientific methods! For example:

Method 1: Open windows for ventilation

Let formaldehyde come out if it is afraid of it. Increase the indoor temperature and humidity, close it for 10-12 hours, and then force it out. To hide the formaldehyde in the room, ventilate it. Use an industrial fan to blow against the air outlet (never blow against the furniture, as it is easy to damage), so that the air can form convection.

Method 2: Clean soft furnishings and fabrics

After home decoration, you will definitely buy a lot of soft furnishings and fabric products, which will also cause formaldehyde to exceed the standard, because a lot of formaldehyde will be added to fabrics and soft furnishings. In order to prevent it from being damaged too easily, a lot of chemical additives will be added, which will volatilize a lot of formaldehyde.

Method Three: High Temperature Removal

Formaldehyde is extremely volatile at room temperature. If the indoor temperature continues to increase, the formaldehyde inside the furniture will be quickly forced out, and then ventilation is required. , can accelerate the removal of formaldehyde.

You can purchase photocatalyst spray and use it yourself. The usage method is:

Method 4: Photocatalyst spray

1. Choose a time with sufficient light and sunny weather. Spray;

2. The furniture needs to be wiped clean and kept dry;

3. The nozzle is about 30 cm away from the items, spray 3-5 times, and spray again after 30 minutes;

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4. After spraying, you can move in after being left vacant for about 7 days (you need to continue to maintain ventilation after treatment)