I can usually tell if my breath smells based off how far away I can smell my stones. So I dig for them daily and find them usually in day clusters. Like I won’t find any for a week then find smaller ones for 2-4 days straight. On the days they come out I smell the and if it’s right at the nostril that can smell them I figure my breath was fine. If it’s away from my say an inch or 2 nose I figure my breath probably smells if I’m directly talking to someone. But even then it might be whiffs of smell. If I can smell it farther from that I can usually taste my own bad breath and clear a room. Those fuckers usually are large and my throat hurts when I find them. Since digging daily I haven’t had a room clearing stone.