u infect yourself what u do is
1.join lobby there will be writing on the map screen
2.back out go to splitscreen start the match and choose class and press back on the controller and then left on the dpad
3.end it
4.go to private match edit game and watevs and start it
5.press back then left on dpad and private match with friends

NOTE:small crosshairs are the only infect that work in real games
NOTE 2:small crosshairs come from steadyaim pro so equipt that
HAVE FUN PLS POST LEGIT AND PLUS REP AND MSG GT:MCGX MuTaNT for inv