forcing a bloom with gas?

[armagedon48]

i have heard that greenhouses will use a gas to intoxicate bromeliads into blooming before they reach their mature size. which is why you see "mini" bromeliads with a bloom at lowes or home depot. i have also heard of this method to force other ornamental plants into bloom. i forget what gas is used as well.

my question is if we can force orchids into bloom using some sort of gas. i can easily create an atmosphere of near pure CO2 around the orchid, would this intoxicate the plant into forcing it to try and reproduce? would a recovery time of about 3-4 months between blooms be fine (IF the method would work)?

can anyone further expand on this idea and give more info or other methods?