Device for removing one or more undesirable or dangerous substances from a gas or a vapor mixture and a gas mask comprising such a device

摘要

The invention relates to a device for removing one or more undesirable or dangerous substances for the human race from a gas or vapour mixture, said device comprising: a predetermined amount of adsorbent for adsorbing the substances and an odourant for releasing an odour in order to alarm a person, wherein the odourant is arranged in such a manner that said odourant is displaceable by the substances, following a predetermined level of saturation of the adsorbent.