Ian Christian Carlson v. Commonwealth of Virginia, 823 S.E.2d 28

Officers responded to a call in a trailer park and, while canvassing, detected a strong odor of marijuana; they approached multiple trailers and admitted to sniffing doors/windows within the curtilage to localize the odor to Lot 65 (Carlson’s trailer).
Officers then summoned Vice/Narcotics; Detective Cusumano arrived ~1 hour later, walked to Lot 65, smelled marijuana at the front door, and prepared an affidavit based on his observations to obtain a search warrant.
Execution of the warrant led to a standoff and SWAT entry; police found a grow operation (≈176 plants), trimmed marijuana, a police scanner tuned to the officers’ channel, cash, an AK-47, ammunition, a digital scale, and grow equipment.
Carlson moved to suppress, arguing the evidence was fruit of the officers’ initial unlawful entry onto the curtilage; the trial court found the initial search unlawful but denied suppression under independent-source/attenuation theories and the existence of a warrant.
Carlson was convicted of manufacturing marijuana (Code § 18.2-248.1) and misdemeanor obstruction (using a police radio during a crime); he appealed, challenging the denial of suppression and insufficiency of evidence for distribution intent.

Issue	Plaintiff's Argument (Carlson)	Defendant's Argument (Commonwealth)	Held
Whether evidence obtained under the warrant is admissible despite officers’ initial warrantless entry onto curtilage	Initial illegal entry produced Detective Cusumano’s involvement and observations; the warrant evidence is fruit of the poisonous tree	Detective Cusumano acted as an independent source; warrant and subsequent observations render evidence admissible	Trial court erred; Cusumano was not an independent source, attenuation and inevitable-discovery fail; suppression required
Whether evidence was sufficient to prove manufacture not for personal use (distribution intent)	Carlson: plants and paraphernalia were for personal medical use; explanations for cash, weapon, scale, and scanner were plausible	Large number of plants, cash in various denominations, scale, weapon, scanner support distribution inference	Evidence was sufficient to support distribution verdict (but convictions vacated due to suppression issue; Commonwealth may retry)

Murray v. United States, 487 U.S. 533 (independent-source doctrine bars exclusion only when subsequent lawful source is wholly independent of prior illegality)
Segura v. United States, 468 U.S. 796 (illegal entry does not bar evidence obtained from sources wholly unconnected to that entry)
Nix v. Williams, 467 U.S. 431 (inevitable-discovery doctrine permits admission if evidence would have been discovered by lawful means)
Wong Sun v. United States, 371 U.S. 471 (fruit of the poisonous tree and but-for causation are necessary but not always sufficient for suppression)
Brown v. Illinois, 422 U.S. 590 (attenuation factors: temporal proximity, intervening circumstances, flagrancy/purpose of misconduct)
Utah v. Strieff, 136 S. Ct. 2056 (attenuation doctrine and factors for dissipation of taint)
Grubbs v. United States, 547 U.S. 90 (probable-cause requirement: fair probability evidence will be found in particular place)