What do you suspect this is?

[Crabby127]

 

[ktrain]

Thats definitely an egg sac.
Not sure what from though.

 

[Crabby127]

So I just remove it or use
Spray?

 

[sykofan]

Funny, I found the same thing on mine a few days ago and then after a closer look found a spider hiding under the next leaf.

 

[BucksCountyFigs]

So I just remove it or use
Spray?

Definitely remove it asap.

And then I personally would drench the entire leaf with rubbing alcohol, rubbing it in all the nooks and crannies, just in case.