Do airdrops really pay?

Could you please elaborate on the topic of cryptocurrency airdrops? I'm quite curious about whether they actually offer financial rewards. Could you explain how they work, and what are the chances of actually benefiting from participating in such events? Also, are there any risks involved that potential participants should be aware of? I'd like to understand the pros and cons of getting involved in airdrops before making a decision. Could you provide some insights into this matter?