This Bachmann HO USRA 0-6-0 + SoundTraxx Econami + Smoke train reference, allows to activate smoke with track sound from a dcc bachmann control, if not please indicate the references that have this function.
This is the description for the 'SoundValue' 0-6-0 from Bachmann's on-line store. There is no mention of smoke:
Features Include
Authentic USRA standard design
Precision motor
Soundtraxx® Hyperdrive2™ Advanced Motor Control for refined low-speed operation
Flex-Map function mapping technology for reassigning function keys F0-F28 to any effect
Hyperlight™ equipped headlight and reverse light with Rule 17 operation or automatic direction control
Soundtraxx® Econami™16-bit polyphonic sound with user-adjustable sound effect and volume options
Completely hidden drivetrain
Upgraded locomotive body with refined and improved boiler and cab details
Newly tooled roadname-specific coal or oil tender with operating backup light
Operating LED headlight with roadname-specific placement
Separately applied metal handrails and uncoupling levers
Separately applied bell, number plate, and clear cab windows
Highly detailed painted bodies with precision graphics
Upgraded chassis and operating see-through drive wheels with spokes
Metal siderods
Blackened metal wheels with RP25 contours on locomotive and tender
Magnetically operated E-Z Mate® Mark II coupler on the front and rear
Product Measurements: L 9.5 in., W 1.5 in., H 2 in.
Performs best on 18" radius curves or greater
Retail Package Measurements: L 10.2 in., W 1.8 in., H 3.4 in.
The earlier version of the 0-6-0 had smoke, but no DCC decoder.
Decoder function outputs do not supply enough current to operate a smoke unit. You sould have to use the function output to trigger a relay that supplied track voltage/current directly to the smoke unit heater. And there is not really room for that in most HO locos.
Len