Air quality in German-speaking countries over Easter is catastrophic in many regions. Saharan dust, Easter fires, wood and pellet stoves are to blame.
The health consequences of fine dust have been well studied. Don't jog outside, don't exert yourself and don't force these breathtaking amounts of dirt into your lungs. Resist the German obsession with burning things. Do not use wood or pellet Stoves. And be less afraid of those who have made making people sick, especially children, a dominant German custom.