Even PLA gives off a plastic smell when printing. The plan was to run the printer in an unheated garage to keep the smell out of the house. If the environment is too cool the printing has a variety of problems. The ideal solution would be to fabricate an insulated enclosure so that the print bed heater and hot end would also keep the air in the enclosure within acceptable printing temperatures. Enclosure temperature becomes more important when using plastics at higher temperatures and less forgiving than PLA.
A spreadsheet was produced to predict the steady steady state temperature rise in the enclosure given the dimensions, insulation and energy dumped into the volume.