It is no secret that during the fall leaf season it is practical to blow leaves and other debris with the winds to our backs. It is even practical to blow off anything with the winds to our backs. The involvement of line trimmers and hedge trimmers aren't such a problem when the winds are involved unless they are in close proximity to the face. What I would like to ask is---"How many pros experience light headed-ness, shortness of breath, and even headaches after prolonged use of blowers, trimmers and line trimmers"? I can recall the owner's manuals do require a mask while operating their machines. Is this a practical method of use for the pro? How many of you wear a mask during the season in heat climates? A couple of years ago, we sold our last Toro Recycler 2 2cycle push mower because of the excessive smoke that made us sick to push the mower during the hot muggy days in the summer. As we use the 2-cycle equipment; usually with the winds to our backs, the emissions are constantly flowing around our torso or around our necks to the facial area. The 2-cycle oils are sold as smokeless............most are but more aren't! Either way, the emissions are there whether they are seen or not, and do they cause you problems during the leaf season because of more prolonged use than usual??