Is sniffing expo markers harmful

Yes, sniffing expo markers can be harmful. The fumes from the solvents in dry erase markers can cause respiratory issues, headaches, dizziness, and other health problems if inhaled in large amounts. Prolonged or intentional inhalation can lead to more severe health effects, including damage to the nervous system. It's important to use these products in well-ventilated areas and avoid inhalation.