Do some clients automatically re-broadcast events or do nostream ask events from other relays in some cases?

Somehow there's alot stuff in my relay and was quessing how thos work.

If i have client only connected to my relay, am i safe to spam it without worrying my events end up spamming other relay's?

Example in picture, i can found my profile thats not connected to my relay 🤔😄

#nostr #nostream #amethyst #iris