Sickness

[froggyboy604]

I think there is also a chance that a home made filter can break your air purifier if it causes it to overheat.

[Skeithex]

True, not using official made stuff can cause anything to break.

[froggyboy604]

Non-official stuff like air filters may also contain harmful chemicals if the materials like paper and plastic is badly made.

[Skeithex]

True, the more cheap its made, the worse it might contain something bad for your home or environment.

[froggyboy604]

The packaging may also be cheaply made, so rats and bugs can touch the inside of the package.

[Skeithex]

True, I've gotten stuff from amazon with dead bugs in it, making me wonder how safe it was to handle.

[froggyboy604]

I hope unhappy underpaid workers dont put dead bugs in packages on purpose.