Anything you smoke is unhealthy. But will smoking rose petals get you sick?
No, you can roll a joint using rose petals.
You can smoke rose petals as a tobacco substitute and also use it as an additive in a joint, i.e., in combination with cannabis concentrates. If you smoke the rose petals, you may easily feel euphoric. However, this feeling is not very long-lasting. What persists is it brings you in a positive mood and offers a fundamentally relaxed feeling that can also help with depression.