The lawyer for missing baby Lisa Irwin's parents questioned reports that an FBI sniffer dog detected a dead-body smell in the family's home last week.
While attorney Cyndy Short fights to keep her clients above suspicion, interest in a mystery man allegedly seen carrying an infant the night that the child vanished from her parents' Kansas City home intensified. ABC News aired surveillance video of the man over the weekend.
The two developments were the latest twists in Irwin's disappearance. The child's parents, Deborah Bradley and Jeremy Irwin, claim their 11-month old was kidnapped from their Kansas City home on Oct. 4.
Police have searched the couple's home several times and last Monday, an FBI cadaver dog detected a dead-body scent in the parents' bedroom.
But Short doubted the credibility of that finding, telling Good Morning America that decomposing odors can last for decades.
"This is an old home, 63 years old, " Short said. "There could be a lot of other explanations for that."
Still, a judge allowed the police to search the house again, because of the dog's hit.
Police won't comment on the supposed mystery man spotted by witnesses and caught on grainy surveillance footage, but Irwin's family believe the sightings support their claim their child was kidnapped.
Cops got two calls from people claiming they saw a man walking with a naked baby or an infant only wearing diapers, according to ABC.
A couple living three doors down from Irwin and Bradley saw a man in a t-shirt with a baby. They called the police on the morning of Oct. 4 to report the strange sight.
Three miles away, a man returning home from work also called the police because he was suspicious of a man he saw holding an infant.
Footage from a gas station in between the two locations where witnesses saw the so-called mystery man also shows a person emerging from woods at 2:30 a.m.
Jeremy Irwin told police that when he returned home from his nightshift on Oct. 4, he found the front door unlocked, the lights on, and a window that had been tampered with. Bradley first told cops that she put Lisa to bed at 10:30 p.m., but she's changed her story to say that the last time she saw the infant was at 6:40 p.m.
She's also admitted that she got drunk the night her child vanished.
PHOTOS FROM THE LISA IRWIN DISAPPEARANCE: