Do I need shop that has Smoke Machine to find exact leak in EVAP system? on 1997 Volvo 850

1997 Volvo 850 check engine light, diagnostic shows large leak. Do I have to go to Volvo mechanic with Smoke Machine, or can it be fixed by regular mechanic? ( big cost difference )
I need to smog asap.
PS I am a woman so some assume ignorant re: autos.

Asked by for the 1997 Volvo 850
In some cases of small evaporative leaks the smoke machine is probaly only way to find leak.
Thank you for your reply, I really appreciate you taking the time to respond! The EVAP diagnostic indicates "Large" Leak. Do you still think Smoke Machine?
At $110 an hour for local independent Volvo shop I just wanted to make the best choice. My usual mechanic
is $65. but it may take him more time etc.
Any thoughts?
I personaly think evap leaks are the toughest to diagnose due the differant things that first have to be done to ut the systm in a sealed mode to do smoke test. This procedure varys with each make of car. As far has to whom you should take it too I cannot comment. It a matter of whom do you have trust and cofidence in.