Ms. Ball also leads limo tours, booking one or two “Breaking Bad” circuits a day since January. Among her other tie-in products are hand-painted Pez dispensers depicting some of the show’s characters. All told, she says, she has seen a 25 percent increase in sales of her “Breaking Bad” products and a 10 percent bump in sales over all in the past year.

For now, anyway, “it’s like Christmas every day,” she says. “It’s basically another business that’s been spawned out of this.”

Carrie Mettling, co-owner of the local chain Rebel Donut, expects that most viewers who haven’t finished watching the series will be caught up within a year, at which point enthusiasm may wane.

Rebel Donut makes the Blue Sky doughnut, which is slathered in blue frosting and dusted with blue rock candy. As it turns out, one of Rebel’s three branches is inside the building that doubled as the Drug Enforcement Administration office on “Breaking Bad.” “I thought it would be pretty funny to sell blue-meth doughnuts in the D.E.A. building,” Ms. Mettling says. “It was an ironic coincidence.”

She created the first batch of Blue Sky doughnuts in June 2012 as a gift to the “Breaking Bad” star Aaron Paul. After she posted a picture of him with the doughnuts to her store’s Facebook page, sales spiked. She typically sells six dozen a day and 40 dozen on Sundays, when the show is broadcast. For the current season’s premiere, fans hosting viewing parties across the country bought 1,500 dozen.

One business that’s already feeling a pinch is A Good Sign, a print shop that created the artwork used on the sets. Before “Breaking Bad” came to town, its owner, Tami Abts, ran a one-woman shop, but by the end of filming for the fifth season, her staff had ballooned to 10. Business was alarmingly slow through the spring and summer — and she scaled down to one employee — though last week it began to pick up again, she says.

After a four-month hiatus, many of the crew members for “Breaking Bad” have now landed jobs on “The Night Shift,” a new NBC series lured to Albuquerque after the New Mexico Legislature passed the so-called “Breaking Bad” bill, which raised tax subsidies for television productions in the state.