Is wood stain harm-full to breathe in if there is an odor present?

Yes, wood stain can be harmful to breathe in, especially if there is a strong odor present. Many wood stains contain volatile organic compounds (VOCs) that can irritate the respiratory system and lead to headaches, dizziness, or more serious health issues with prolonged exposure. It's important to use wood stains in well-ventilated areas and consider wearing a mask to minimize inhalation of fumes. Always follow safety instructions on the product label.