1. Possible allergies: Roses and chrysanthemums may cause allergies in some people, including difficulty breathing, skin itching, redness and swelling.

2. Indigestion: Soaking flowers and plants in water for too long may cause fungi to multiply, leading to diarrhea and other indigestion problems.

3. Damage to the liver: Excessive drinking of rose and chrysanthemum water, especially when used together with some Chinese herbal medicines, may have an impact on the liver.

4. Impact on diet: Drinking too much herbal water may cause people to lose their appetite, thus affecting normal eating habits and nutritional intake.

5. Aggravate the condition: For patients with some diseases, drinking rose and chrysanthemum water may aggravate the condition, including diabetes, high blood pressure, etc.

6. Negative emotions: Chemical components contained in some flowers and plants may affect the nervous system, leading to negative mood, irritability, anxiety and other emotional problems.