Safety of New Year's decorations and Christmas trees

Lately, I've been wondering how to keep myself and my family safe when buying New Year's decorations, especially Christmas trees, ornaments, and garlands. The article states that there are many products on the market with harmful substances or dangerous elements, and mandatory certification, for example for artificial Christmas trees, is not provided at all. If I buy a Christmas tree or garland of questionable quality in a store, and it turns out to be dangerous or harmful to health, what rights do I have as a consumer, and can I demand inspection of such goods or compensation if something happens?