3D printers emit particles and gases even when using PLA filament
Reports indicate that 3D printers operating in bedrooms or home offices release ultrafine particles and volatile organic compounds regardless of the filament type used.
Emissions from common materials
Common PLA filament releases airborne particles and gases when heated inside a printer. These emissions can alter the air in a room without producing visible smoke. Human airway cells have been exposed to these substances during testing.
Health risks of exposure
The EPA states that ultrafine particles from filament printers can reach deep into the respiratory system. Some of the released gases are harmful when inhaled by people nearby. Sitting next to a running machine for hours increases breathing in these emissions.
Comparison between filaments
A 2026 test found that ABS emits more particles than conventional PLA across 17 commercial brands. Nozzle temperature and additives can also change the amount of emission released. Switching to PLA helps reduce risk but does not eliminate it entirely.
Reported by one outlet
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