SMOKE+EDGAR for outside USA area

My question is: can I use SMOKE to produce input from EDGAR pre-gridded inventory files for CAMx in Lambert grid outside USA area?

Yes, you can generate the outside US emissions from EDGAR. The format will be CMAQ-ready (IOAPI/NetCDF) but then you can convert them into CAMx-ready format using CMAQ2CAMx tool in CAMx modeling system.