The Russian GP5 filters are not toxic. Don't worry. They just won't protect you from any NBC chemicals. You probably don't need to worry about that though because I doubt that you are going to be bathing in nuclear waste. The coffee can filters, on the other hand, have a much higher risk of containing asbestos. You can use the short, cylindrical filters, but not the tall ones.
No, It was made post ww2 where they stopped using asbestos in the filters. 100% safe.
No they don't, Gas Mask filters are designed not to go bad despite if the lid is unscrewed off, unscrewing the lid of a gas mask filter doesn't have any effect on the gas mask or it's filters.
A gas mask is used to filter out toxic agents in the air.
Toxic gases.
The primary function of a gas mask is to prevent toxic gases or poisonous material from entering the lungs and attacking the person. It does not provide its own oxygen supply, but filters out the particles. They can also protect the face from contact poisons or gases.
diphosgene
Well nobody is certain, but people have taken them apart and didn't find anything. So I don't believe they have asbestos, but they may be toxic in some other way. DON'T USE the big coffee-can style masks because they do contain asbestos. But the standard mask should be fine. If you still don't want to use them, you can buy the Swiss 40mm thread gas mask filters.
It filters out unwanted chemicals. It's also used to filter water like the Brita filters.
The purpose of the gas mask was to protect the wearer from inhaling airborn pollutants and toxic gases, they were also used to stop viruses and diseases
A gas mask with specific filters designed to effectively protect against chlorine gas exposure should be worn to safeguard against its harmful effects. It is important to ensure that the mask fits properly and is in good working condition before use.
It had filters to prevent poisonous particles for being breathed in.
A gas mask is a mask worn over the face to protect the wearer from inhaling airborne pollutants and toxic materials. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Some gas masks are also respirators, though the word gas mask is often used to refer to military equipment (e.g. Field Protective Mask, etc.) (The user of the gas mask is not protected by gas that the skin can absorb.)