No, studies have not shown that, as far as I can tell. There is, however, a grain of truth in this claim.
The missing study is here and it does not confirm the claim, nor it addresses the claim:
Rather than increase
the likelihood of enacting the simulated behavior
(eating), simulation evoked the consequences
of the behavior (habituation)
Basically what the study has found is that if you imagine eating M&Ms, then eating them is less satisfactory than otherwise, similarly to what happens when foods are more satisfactory at the first bite than at the tenth ("habituation").
This has nothing to do with cooking, or the smell.
That said, it has been found that smelling a food, or a neutral odor, reduces craving.
Food cravings are a risk factor for the development of problem eating behaviour. We examined effects of olfactory stimulation on food craving reduction. A brief odour exposure reduced cravings for food as well as chocolate. A simple olfactory task presents a practical tool for reducing food cravings.
— Eva Kemps, Marika Tiggemann, Olfactory stimulation curbs food cravings
This is confirmed by this later review of their findings
Nevertheless, there are positive results with novel approaches to reduce food cravings, one such experimental therapy involves introducing a neutral odour to self-reported chocolate cravers after craving stimulation. Interestingly, these individuals reported a reduction in the intensity of cravings (Kemps and Tiggemann 2013)
— Food Cravings, Current Understanding and Treatments
