My husband has allergies and when he cuts the grass the lawnmower kicks up a lot of dust and it smokes. So when he comes in from mowing he is coughing and sneezing and has to wash his mouth out with water. His eyes water not only from the disk kicked up by the power mower but from the exhaust. That is why I was thinking of getting a push reel mower. It does not have an engine, only my husband’s muscles to operate it. It is good exercise for him and will certainly not smoke or kick up the dust the old gas mower does.