system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Was Thanos being so sneaky about the Infinity Stones because he knew Odin might notice and kill him?

And he only acted on his own when he knew Odin was no longer a problem?
gpt
Not just Odin, the stones were protected by a few figures that could have been a threat to Thanos.

The Space Stone - Protected by Odin.  As a skyfather Odin is powerful enough to kill Thanos. 

The Time Stone - Protected by the Ancient One.  A centuries old master magician and Sorcerer Supreme who routinely bitch-slapped beings far more powerful than Thanos.

The Power Stone - He just didn't know where it was.  It wasn't super protected, but Peter Quill found it.  

The Reality Stone - Also very difficult to access, and protected by the Dark Elves.  Thanos could possibly have killed Malekith but this was also being monitored by Odin.

The Mind Stone - Thanos had that one.