My air purifier was instantly showing red and running at max fan speed, it took me a while to realize that the incense i ignited is causing it to detect the ext

My air purifier was instantly showing red and running at max fan speed, it took me a while to realize that the incense i ignited is causing it to detect the extra particles in the air and spin up. Now the question is whether this is a limitation in air purifiers, their inability to distinguish inert and harmless particles from harmless ones, because all they do currently is just detect particles, not their nature.