There are several options to disable saving commands to bash history e.g.
set +o history
or
unset HISTFILE
How to start a new bash session with history disabled?
I tried bash +o history
but it didn't work.
EDIT: I don't want to modify my rc or profile files. I just want to start a single bash session with a different configuration.
bash: history: invalid shell option name
,+O
is for shopt