I would assume your concern of selling fireworks would be the social distancing issues, I can’t think of anything else. The FPPA interprets fire safety basically: if a potential fire or carbon monoxide can seriously endanger the safety of any person. The issuance of an Order will need to contain info regarding fire and/or CO safety. I don’t think there is any way you can issue an Order to stop the sales of fireworks. If you have a fireworks permit process it would be reasonable to say that the fire safety aspect is looked after. If your By-law does not contain any provisions where the Chief can refuse a firewoks permit, I don’t believe you can ban it. If your By-law is silent about brick and mortar retailers there is nothing you can do to prevent them from selling and using.