I always follow the 3 oz rule for toiletries and I do carry-on only. I utilize precheck when I can so I don't get confiscations because I pay attention to restrictions.
Only "weird" thing was when I took my mom's ashes to South Africa. TSA "agent" freaked out when I told her what the powdery substance in my bag was. All they had to do was rescan and pass me thru. I presented them at ATL the next day by putting them in a small bin--nobody gave a rodent's derriere...Needless to say, a little bit of my mom resides in South Africa forever!