Anti theft alarm is going off

Hi my 2004 Honda Odyssey starter or engine will
not ignite I lock my keys in the car then I squeeze
my arm through the window and unlocked it with
my finger then when I open the door the alarm
came on and it will not go off I tried sticking my
key in the ignition and starting the engine but it will
not start at all I get no sound as if the car was put
in that mode I'm trying to figure out how do I start
my engine and get that alarm to shut up when the
key does not go in the driver's door like it's
supposed to to disarm the alarm do to kids
sticking stuff in my Keyhole on the driver side